Study on the Effect of High Temperature Quenching on the Surface Roughness of Yellow Sandstone

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Abstract Sedimentary rocks are commonly found on the Earth's surface. As the most common type of sedimentary rock, sandstone plays an indispensable role in engineering construction. To understand the changes in the surface roughness of building materials during fire, this research performs a simulation by using the high temperature quenching method. The surface roughness of rock samples was measured by using a surface roughness meter and was quantified by using the arithmetic mean error of the contours (Ra). The following results are obtained through data processing:(1) When the temperature was 500℃ or less, the surface roughness of the rock mass showed a relatively small amplitude and irregular fluctuations. (2) The surface roughness increased as the temperature rose from 500℃ to 600℃. (3) At temperatures above 600℃, a comprehensive analysis of Ra, Ry, and Rz, which quantify the sample fracture extension, revealed that the surface roughness continued to increase along with temperature. (4) The structure and composition of the minerals in the yellow sandstone samples changed along with an increasing temperature, and these changes could alter the amplitude of rock mass surface roughness, which is an internal factor that affects the overall surface roughness of the rock mass. Overall, the surface roughness increased along with temperature.

Key words： tunnel engineering effect surface roughness high temperature quenching yellow sandstone contour arithmetic mean error

Received: 08 May 2019

Corresponding Authors: ZHAO Cui-zhu E-mail: 2533997417@qq.com

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	ZHAO Cui-zhu
	DONG Zhi-hao
	HU Rui
	ZHANG Ren-lin
	GAO Yu-xin

Cite this article:

ZHAO Cui-zhu,DONG Zhi-hao,HU Rui, et al. Study on the Effect of High Temperature Quenching on the Surface Roughness of Yellow Sandstone[J]. Journal of Highway and Transportation Research and Development, 2019, 13(4): 72-76.

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http://manu27.magtech.com.cn/Jwk_gljtkj_en/EN/ OR http://manu27.magtech.com.cn/Jwk_gljtkj_en/EN/Y2019/V13/I4/72

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